Finding the Fourth Proportional to 354,753.56, 489,571.32 and 201,787.80
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Solution
The fourth proportional to 354,753.56, 489,571.32 and 201,787.80 is: 278,473.65
Step by Step Solution
- Step 1: Write the proportion equation
354,753.56 : 489,571.32 = 201,787.80 : x - Step 2: Convert to fraction form
354,753.56/489,571.32 = 201,787.80/x - Step 3: Cross multiply
354,753.56x = 489,571.32 × 201,787.80 - Step 4: Simplify right side
354,753.56x = 98,789,519,605.90 - Step 5: Solve for x
x = 98,789,519,605.90/354,753.56 - Step 6: Final answer
x = 278,473.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.